Top Definition
The longest non-chemical word in the english language, Pneumonoultramicroscopicsilicovolcanoconiosis refers to the inflamation of the linings of the lungs due to microscopic silica ash inhaled after a volcanic eruption
the longest word, period, is the chemical name for titin, though this is disputed as an english word because it is a chemical name. pneumonoultramicroscopicslicovolcanoconiosis, however, is a medical condition, and, therefore, is english.
by Rippy the Razor December 28, 2013

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